HOUSEHOLD INSECTICIDE MORTEIN Weight: 30PCS. MORTEIN POWER KILLER DEEP MATS 30*32 is the most effective way to kill insects. They create an insect-free environment and trap them in the mat. You can use them indoors or outdoors. Our mats are designed to kill any pest that comes across it - from ants, spiders, and bugs to rodents and snakes. Plus, our mats are eco-friendly and completely reusable; so you can be sure that you're making a smart investment in your home's safety and hygiene. This unique product is a mat of deep fibers that absorb water and kill pests on contact.